feat(vault): export portable notes with missing attachment reports

internal/vault/export_notes_test.go

@@ -0,0 +1,60 @@
+package vault
+
+import (
+	"archive/zip"
+	"context"
+	"io"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestExportNotesKeepsMarkdownAndReportsMissingAssets(t *testing.T) {
+	v := newVault(t)
+	source := "# 原文\n![](assets/a.png)\n![](missing.png)\n"
+	if _, err := v.Write("note.md", []byte(source), Precondition{}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := v.Write("other.md", []byte("trash"), Precondition{}); err != nil {
+		t.Fatal(err)
+	}
+	v.Delete("other.md")
+	v.SaveAsset("note.md", "a.png", strings.NewReader("image"), 50<<20)
+	file, err := v.ExportNotes(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.Remove(file.Name())
+	defer file.Close()
+	info, _ := file.Stat()
+	z, err := zip.NewReader(file, info.Size())
+	if err != nil {
+		t.Fatal(err)
+	}
+	seen := map[string]string{}
+	for _, f := range z.File {
+		if f.FileInfo().IsDir() {
+			continue
+		}
+		r, _ := f.Open()
+		body, err := io.ReadAll(r)
+		r.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+		seen[f.Name] = string(body)
+	}
+	if seen["note.md"] != source {
+		t.Fatal("导出改写了正文")
+	}
+	if _, ok := seen["other.md"]; ok {
+		t.Fatal("不应导出回收站")
+	}
+	if !strings.Contains(seen[".rawmark-export/missing-assets.json"], "missing.png") {
+		t.Fatal("未报告缺失附件")
+	}
+	target := newVault(t)
+	if _, err = target.Import(context.Background(), "", "restored", []ImportFile{{Name: "notes.zip", Reader: file, Size: info.Size()}}); err != nil {
+		t.Fatalf("导出包不能导回: %v", err)
+	}
+}